Mention force-exclude in "Configuration > Python file discovery" (#21500)

Author: thejcannon

docs/configuration.md

@@ -345,8 +345,9 @@ formatting `.pyi` files, but would continue to include them in linting:
 By default, Ruff will also skip any files that are omitted via `.ignore`, `.gitignore`,
 `.git/info/exclude`, and global `gitignore` files (see: [`respect-gitignore`](settings.md#respect-gitignore)).
 
-Files that are passed to `ruff` directly are always analyzed, regardless of the above criteria.
-For example, `ruff check /path/to/excluded/file.py` will always lint `file.py`.
+Files that are passed to `ruff` directly are always analyzed, regardless of the above criteria, 
+unless [`force-exclude`](settings.md#force-exclude) is also enabled (via CLI or settings file).
+For example, without `force-exclude` enabled, `ruff check /path/to/excluded/file.py` will always lint `file.py`.
 
 ### Default inclusions